ADM2865EBRNZ

Overview

The ADM2865EBRNZ is a half-duplex RS-485 transceiver featuring 5.7 kV RMS signal and power isolation with an integrated isolated DC-to-DC converter. It supports data rates up to 25 Mbps and offers high common-mode transient immunity of 250 kV/μs. The device operates within a supply voltage range of 3 V to 5.5 V, consumes 28 mA operating current, and withstands ±15 kV IEC ESD. It functions across a temperature range of -40°C to +105°C in a 28-pin SOIC package.

Feature Summary

• Integrates an isolated DC-to-DC converter to eliminate external isolated power requirements
• Provides robust 5.7 kV RMS isolation for both signal and power channels
• Ensures high noise immunity with 250 kV/μs common-mode transient protection
• Complies with PROFIBUS standards for 5 V systems

Applications

• Industrial automation networks requiring galvanic isolation
• PROFIBUS communication systems
• Factory floor control units
• Building automation controllers

Procurement Notes

Verify the specific suffix (e.g., EBRNZ) against the manufacturer's official datasheet to confirm pinout compatibility and isolation ratings. Confirm that the integrated DC-DC converter meets your system's electromagnetic interference constraints. Ensure the selected packaging variant matches your assembly process requirements before finalizing procurement orders.

Selection Notes

Select this component when high-speed data transmission up to 25 Mbps is required alongside significant voltage isolation. The integrated power isolator simplifies design by removing external transformer components. Consider the thermal performance within the -40°C to +105°C range for harsh industrial environments where standard interfaces may fail due to ground potential differences.

Part Context

This part belongs to the ADM286xE family of isolated RS-485 transceivers from Analog Devices. These devices are designed to replace traditional optocoupler-based solutions, offering higher reliability and lower board space consumption. The family includes full-duplex variants like the ADM2863E, providing flexibility for different network topology requirements.

Replacement Considerations

The ADM2863EBRNZ serves as a functional substitute if full-duplex operation is acceptable instead of half-duplex. Verify that the replacement maintains the same 5.7 kV RMS isolation rating and 25 Mbps speed capability to ensure system integrity.